Originally Posted by 350_z

Yes 316 is good. Every single hp claimed to a car is at the flywheel. Like a zr1, says it makes 6xxhp but if you put it on a dyno it will make 530whp or so.When you dyno just the engine you get the brake horse power (bhp)/ power at the flywheel. Like this
YouTube - ‪4 ROTOR ENGINE DYNO VIDEO 1664HP 1158lb/ft‬‏

Then when you put it in the car it will lose horsepower if you dyno it because some power is lost when taking it to the wheels. generally a 10-15% for rwd and 25% for awd because it has to take the power to 4 wheels instead of 2.

YouTube - ‪370z Dyno Test Results‬‏

By the way is this your first car?

Edit: why would you spend 3.4k on exhaust? which kind? should've turbo'd it with that money.